Design of the Signal-Processing Circuits of Weak Signal Detection

In the procedure of weak-signal detection, the noises are much stronger than the signals, so some measures should be taken to improve the S/N when measuring the signals. The traditional method is not able to efficiently measure the weak signals, as is proved by many experiments. In order to improve the S/N, an effective method of weak signal detection is essential for the detection. The main contents of the article is based on the theory of the weak signal detection designing the signal detection circuits according to the features of the weak signals.